Assembling machine and method



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EtmEMCK Gl. WXEILAND, @F WGDMVEN, NEW EMRK, ASSEGNR T0 NCHE @ALB AND OLOSURE CORRATEUN, GIE LQNG ESMND MTE', NEW WRK? it GEPEIATN I @3? NEW YRK ASSEMBLNG' METHED lpplieatioxi'nled January it, wat. Serial No. eftii.

rlhe present invention relates generally to a method and apparatus for assembling ar-b ticles and particularly to a method and apparatus for assembling closure caps and ring gaskets or the like.

Heretofore in the art, caps and gaskets to a large extent, been manufactured and shipped separately to the canner or packer who assembles the caps and gasketsmanually and applies them in the assembled state to containers iilled with cooked materials. 'in

some cases,the caps are such that the gaskets may be inserted therein by the manufacturer and shipped to the packer assembled withoutthe gaskets becoming dislodged en route. 'llhe latter at the present time is by far the more desirable way of handling these articles.

irrespective of whether the caps and gaskets are assembled by the manufacturer and shipped in that state or whether they are shipped separately and assembled by the packer, it has been customary to utilize skilled laborers, usually girls, to manually insert the gaskets in the respective caps. In doing this, a supply of caps is placed upon a table with gaskets nearby and the workers sit at the table and handle each cap individually, placing a fieXible ring gasket therein and dropping the assembled caps and gaskets in boxes at their feet. These caps are gathered up by workmen and turned `overvto other girls who stack the caps one upon another, count, and place them in suitable cases, the packing of the caps stantially half as much labor as the assembling of the caps and gaskets. Y y A preferred bform of cap particularly adapted for side seals on vessels is one having a depending skirt with a circumferential bead therein and preferably having the bead at the lower part of the skirt. With this type of cap it is necessary to insert the respective gaskets in the partially enclosed beadso that the gaskets will by their own elasticity remain in the bead of the cap. The task is rendered more diflicult by the fact that the gaskets, in the various steps of their manufacture, after beingproperly cut, become twisted and distorted out of their natural shape. Skilled laborers in inserting the gaskets usually press vcaps and gaskets in suita one portion ot the gasket in the bead of the cap and run their ngers along the bead and gasket until it is straightened out in the bead of the cap. 'lheir lingers are frequently out in contactin and the wor t generally is ve monotonous. The most skilled workers are a le to assemble only a few thousand et the caps and gaskets daily. @ther employees keep the tables iilled with caps and gaskets and ack the assembled le shipping cases. involves considerable work, and handling of the unstacked caps which requently causes the gaskets to tall out of the beads, necessitating their return to the assembly table. Since caps of this character are made and used in large quantities, as many as a million a day being manufactured at times, the labor required for the work is exceedingly expensive and increases greatly the cost of the finished articles.

An object of the present invention is to provide a machine and method adapted to automatically assemblefcaps and gaskets.

Another object of the invention is 'to provide a method and machine for separatingI ilexible ring gaskets and assembling them with suitable closure caps.

Another object of the invention is to provide a machine and method adapted to constrict iiexible gaskets to a size smaller than the skirt of the caps, insert the gaskets in the caps and permit them to expand to it therein.

Another object of the invention is to adapt such a machine and method to operate with commercial ring gaskets which are usually .twisted and dlstorted from their natural shapes by certain steps in their manufacture.

The latter task with the edges of metallic caps etl Another object is the provision of a pluralroo 

